Fan



FIG. 1 is a front elevational view of a fan showing my new design.

FIG. 2 is a rear elevational view thereof.

FIG. 3 is a right side elevational view thereof.

FIG. 4 is a left side elevational view thereof.

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line areas shown in the drawings form no part of the claimed design. 

CLAIM The ornamental design for a fan, as shown and described. 